Dimming Your CFL

November 1, 2007 at 5:32 pm Leave a comment

Posted by Ed Maurer:

I just ruined two brand new CFL’s this week by dimming them. Why would I do that? Did I test the theory just so that I could blog about it? The mistake was unintentional I assure you. The lights worked great for a week, and I was starting to save money by using a lot less electricity. What I failed to realize was that they were connected to a dimmer switch that was reducing the voltage by just a little bit. Enough to allow the lights to shine for one week, and then they gave up and the circuitry failed. Dimmable CFL’s are becoming more and more available at retail stores. If you are about to purchase a CFL for a light tied to a dimmer switch, make sure the packaging on the CFL you purchase indicates that it’s dimmable. That way the circuitry can handle the reduced voltage applied by the dimmer switch.


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